Has anyone converted the rear drums to disc?

 

not that im aware of. i asked a couple months ago. i did notice theres a conversion for the yaris im wondering if that would work if you just changed out the disks for a 5 hole rotor but i dont know what all parts are with it. the yaris setup is only like 600 bucks too!

 

im not so much concerned about the price. I'd like to know how hard it would be to do, any special tools etc.

 

i would also be interested in it, and 600 or 700 i don't believe is too steep for something like this. my only concern is with the front breaks, because usually cars with rear disk have larger front disks than their rear drum counter parts. but i don't know if the EBS would cancel that out or not.

 

I think you have that backwards. Drum brakes are not as effective as disk brakes, so the larger front disks would be on a rear drum car. The problem I think about is proportioning or metering valve, and also the E-brake mech. Here's an article on conversions.http://auto.howstuffworks.com/auto-p...conversion.htm

 

The Urban Cruiser comes with rear discs... I would be mor concerned about getting everything else right -- master cylinder, booster, ABS/TRAC/VSC system, etc. I wouldn't just slap the discs and calipers on the back and hope that everything else works okay with it.

 

I'll find a brake specialist , have them take a look at tell me what i will need and what not and then do it. If the yaris has the conversion, it could just be a direct swap. theres just not enough stopping power in my opinion from the drums...

 

DIY (sorta) - RunStop Rear disc brake conversion
Had this written up and lost in the hack, going from memory so might miss a couple steps

Not really a DIY, but a documentation of the steps to install the RunStop rear disc brake conversion kit. It's really simple!

1) Obviously, get the car up on stands and remove the wheels. I don't have much pics at this point, but you then need to remove the 4 bolts that hold the wheel hub to the suspension, and remove the hub, as well as the drum brake plate. You also need to clamp shut the brake fluid line, as it will need to be disconnected (you can see this in the 3 photos below), and remove the handbrake line, as well as the plug for the wheel speed sensor (only if you have ABS, I believe)

2) With all that removed, your car should look like this:


3) Now we reassemble, with the new brake bracket plate (note the small drum brake shoes on the inside, those are still used for the handbrake), followed by the wheel hub:




This, by the way, is the stock drum brake plate:



4) Now the fun part, the new discs and calipers!


First slip the disc over the lugs. To hold it in place for the next few steps, you can screw on just 2 of the lug nuts (if they don't screw in all the way you should find some kind of spacer, or just use a regular nut).

5) The caliper is then positioned and secured from the back side with the two black bolts provided (not shown, but you can see the holes through which they go in the next picture)

6) The pads are inserted, then held in place with the long black bolts, inserted from the back. Then, use the metal spring clips (not pictured) to hold the pads in place.


7) Next we need to do the lines. The handbrake line, if I remember correctly, just screws back on at the back of the brake holding plate. For the brake calipers, the kit includes a new bendable metal line, which you must shape to fit, and connect back to the main brake line on the car chassis:



And that's preeetty much all there is to it... just repeat on the other side. Don't forget to take off the clamp, and bleed the brakes after installation.

The results:


Additional notes:

Get your own kit from Micro Image!

The rotors are 285mm if I recall correctly, so this requires a 15" wheel at the minimum. They do come with slotted discs (mine were prototypes so not slotted), and unpainted calipers (so you can paint them any color you want, if you want)

 

They have an up grade kit for the front ( yes i know it has a hefty price of $2000) Ill see what can be done for the back, Who knows could just re do the whole thing all drilled/ slotted disc, 4 piston calipers probably painted either red or dark purple Not really that hard to do... just time consuming. Its my little toy, well soon to be very expensive toy... haha

 

none of the pictures worked? atleast not for me anyways

 

does the same kit come in five lug tho?

 

I've been stalking this post as I am interested in rear disc brakes as well. I ran across the same post on yarisworld that bwhite did. I emailed the RunStop folks (they're out of Manila) last night and asked if the kit would accept a 5 stud axle/rotor setup. They haven't responded yet. I'll post up the reply if they do.

 

no pics

 

Here's a repost (hopefully with pics) from yarisworld user eTiMaGo

Here's the direct link


DIY (sorta) - RunStop Rear disc brake conversion
Had this written up and lost in the hack, going from memory so might miss a couple steps

Not really a DIY, but a documentation of the steps to install the RunStop rear disc brake conversion kit. It's really simple!

1) Obviously, get the car up on stands and remove the wheels. I don't have much pics at this point, but you then need to remove the 4 bolts that hold the wheel hub to the suspension, and remove the hub, as well as the drum brake plate. You also need to clamp shut the brake fluid line, as it will need to be disconnected (you can see this in the 3 photos below), and remove the handbrake line, as well as the plug for the wheel speed sensor (only if you have ABS, I believe)

2) With all that removed, your car should look like this:


3) Now we reassemble, with the new brake bracket plate (note the small drum brake shoes on the inside, those are still used for the handbrake), followed by the wheel hub:




This, by the way, is the stock drum brake plate:



4) Now the fun part, the new discs and calipers!


First slip the disc over the lugs. To hold it in place for the next few steps, you can screw on just 2 of the lug nuts (if they don't screw in all the way you should find some kind of spacer, or just use a regular nut).

5) The caliper is then positioned and secured from the back side with the two black bolts provided (not shown, but you can see the holes through which they go in the next picture)

6) The pads are inserted, then held in place with the long black bolts, inserted from the back. Then, use the metal spring clips (not pictured) to hold the pads in place.


7) Next we need to do the lines. The handbrake line, if I remember correctly, just screws back on at the back of the brake holding plate. For the brake calipers, the kit includes a new bendable metal line, which you must shape to fit, and connect back to the main brake line on the car chassis:



And that's preeetty much all there is to it... just repeat on the other side. Don't forget to take off the clamp, and bleed the brakes after installation.

The results:


Additional notes:

Get your own kit from Micro Image!

The rotors are 285mm if I recall correctly, so this requires a 15" wheel at the minimum. They do come with slotted discs (mine were prototypes so not slotted), and unpainted calipers (so you can paint them any color you want, if you want)

 

the pics don't work.

Is there an estimated time that it would take to do this? (both drums to disc)


as Zefoxe mentioned, does this come in 5 lug?

 

Ok so yeah, nice try I suppose. The pics worked for me up until I cleared my browser's cache. Now they don't work for me either. I'll have to copy the images and host them on my own. I'll try to edit them back in.

**EDIT** They should work now

 

Thanks for the info and pics. Looks like something I could install myself. I wish the microimage was 5 lug though.



P.S. what language is that on the newspaper? Where in the heck did you do the swap? Surely there is someplace closer to Atlanta.

 

correct me if im wrong. but this is going in the wrong direction. yaris is 4 lug, xd is 5 lug. the actual disc goes onto the hub and wont fit. wouldnt you have better luck working with the discs from a tc?

 

has anyone just tried to order the parts that come off the urban cruiser same car parts would bolt right up may have to use the urbans master cylinder as well depends on if ours can handle the pressure of a second set of disks or not?

 

It's not my post and that isn't me in the pics. I simply copied the post off of yarisworld.com, copied the images (right click -> save image as...) hosted the images on my own photobucket account and edited them back in. At the top of my post (#14) I credit the OP over on yarisworld and provide a link to the original thread.

It's not the disc/rotor I see as being the main problem. There plenty of 5 hole rotors out there on the market, many of which I'm sure are compatible with the calipers in this kit. The greater issue here is whether or not there's a mounting bracket for the calipers that will accept the 5 studs on our rear axle like the one you see in the yaris post that accepts the 4. Your suggestion of using tC parts is a good one because we know that the 5 lugs on the tC are the same dimensions. Hence the reason a good deal of us have already stolen their rims. What I don't know is if our rear hub assemblies are directly compatible with the tC caliper brackets. If they are, then there may be something there. Of course it's most likely cost prohibitive but that never stopped any of us here......